256 J y SECTS INJURIOUS TO THE GRAPE. 



spots along each side, each spot consisting of two curved black 

 lines, enclosing a crimson patcii above and a pale-yellow line 

 below, the whole being connected by a pale-yellow stripe 

 edged Avith black. In some instances these spots are discon- 

 nected, and the space between the bhxck crescents is of a uni- 

 form cream-color. The breathing-pores, lower down the side, 

 are margined with black, or black edged with yellow. The 

 other form of the caterpillar is black, with a yellow line down 



Fig. 206. 



the back, and a double series of yellow spots and dots along 

 the sides. It is shown in Fig. 266. 



When mature, it buries itself under the surfoce, where, 

 within a smooth cavity, it changes to a light-brown chrysalis, 

 the moth emerging early in September, when it deposits eggs, 

 from which the second brood of larvae are produced, which 

 mature, enter the ground, and change to chrysalids before 

 winter sets in. 



Since it feeds mainly on plants of little value, and on these 

 in no great abundance, it is scarcely entitled to be classed with 

 injurious insects; yet on account of its being found occasionally 

 feeding on grape leaves it is deserving of mention here. A 

 two-winged parasitic fly, a species of Tachina, infests it and 

 destroys a large number of the larvae. 



No. 137. — The Dark-veined Deilephila. 



Deilephila chamcenerii Harris. 

 This moth very closely resembles the white-lined Deile- 

 phila, No. 136, as will be seen from Fig. 267. It has the 

 same greenish-olive color, and almost the same stripes and 



